1 files changed, 86 insertions, 0 deletions
diff --git a/ext/node/polyfills/perf_hooks.ts b/ext/node/polyfills/perf_hooks.ts
new file mode 100644
index 000000000..3888ec2c5
--- /dev/null
+++ b/ext/node/polyfills/perf_hooks.ts
@@ -0,0 +1,86 @@
+// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
+import { notImplemented } from "internal:deno_node/polyfills/_utils.ts";
+import {
+  performance as shimPerformance,
+  PerformanceEntry,
+} from "internal:deno_web/15_performance.js";
+
+// FIXME(bartlomieju)
+const PerformanceObserver = undefined;
+const constants = {};
+
+const performance:
+  & Omit<
+    Performance,
+    "clearMeasures" | "getEntries" | "getEntriesByName" | "getEntriesByType"
+  >
+  & {
+    // deno-lint-ignore no-explicit-any
+    eventLoopUtilization: any;
+    nodeTiming: Record<string, string>;
+    // deno-lint-ignore no-explicit-any
+    timerify: any;
+    // deno-lint-ignore no-explicit-any
+    timeOrigin: any;
+  } = {
+    clearMarks: (markName: string) => shimPerformance.clearMarks(markName),
+    eventLoopUtilization: () =>
+      notImplemented("eventLoopUtilization from performance"),
+    mark: (markName: string) => shimPerformance.mark(markName),
+    measure: (
+      measureName: string,
+      startMark?: string | PerformanceMeasureOptions,
+      endMark?: string,
+    ): PerformanceMeasure => {
+      if (endMark) {
+        return shimPerformance.measure(
+          measureName,
+          startMark as string,
+          endMark,
+        );
+      } else {
+        return shimPerformance.measure(
+          measureName,
+          startMark as PerformanceMeasureOptions,
+        );
+      }
+    },
+    nodeTiming: {},
+    now: () => shimPerformance.now(),
+    timerify: () => notImplemented("timerify from performance"),
+    // deno-lint-ignore no-explicit-any
+    timeOrigin: (shimPerformance as any).timeOrigin,
+    // @ts-ignore waiting on update in `deno`, but currently this is
+    // a circular dependency
+    toJSON: () => shimPerformance.toJSON(),
+    addEventListener: (
+      ...args: Parameters<typeof shimPerformance.addEventListener>
+    ) => shimPerformance.addEventListener(...args),
+    removeEventListener: (
+      ...args: Parameters<typeof shimPerformance.removeEventListener>
+    ) => shimPerformance.removeEventListener(...args),
+    dispatchEvent: (
+      ...args: Parameters<typeof shimPerformance.dispatchEvent>
+    ) => shimPerformance.dispatchEvent(...args),
+  };
+
+const monitorEventLoopDelay = () =>
+  notImplemented(
+    "monitorEventLoopDelay from performance",
+  );
+
+export default {
+  performance,
+  PerformanceObserver,
+  PerformanceEntry,
+  monitorEventLoopDelay,
+  constants,
+};
+
+export {
+  constants,
+  monitorEventLoopDelay,
+  performance,
+  PerformanceEntry,
+  PerformanceObserver,
+};